Vesuva + Simic Growth Chamber

[theLastGnu]

Vesuva
Land
As Vesuva comes into play, you may choose a land in play. If you do, Vesuva comes into play tapped as a copy of the chosen land.

Simic Growth Chamber
Land
Simic Growth Chamber comes into play tapped.
When Simic Growth Chamber comes into play, return a land you control to its owner's hand.

If I Vesuva someones growth chamber, do I have to return a land I control to play as well?

[IthilanorStPete]

Yes.

When something comes into play, you do three things in the following order:

1. Apply replacement effects i.e. "Ghitu Encampent comes into play tapped." or "As Meddling Mage comes into play, name a card."
2. Apply continuous effects i.e. "All creatures get +1/+1".
3. Check for any applicable triggered abilities and put them on the stack.

In this case, Vesuva's copying ability is a replacement effect, so you do it, choosing Growth Chamber; then the game checks for triggered abilities, sees the Vesuva-Chamber's "bounce a land" ability, and puts it on the stack.